Calls on the Verizon unit were mostly crisp and clear, including speakerphone calls and those made over my carâ€™s Bluetooth connection. On my first full day of testing, I did have several Verizon calls that dropped out for a few seconds, before recovering. Apple attributed this to a very minor glitch Iâ€™d encountered in my initial setup of the phone and urged me to reboot it. I did and suffered no more momentary dropouts.

We ran a series of bandwidth and phone tests on both the Verizon iPhone 4 and AT&T iPhone 4 in 16 locations throughout San Francisco, where 3G bandwidth is known to be as diverse as the residential population.

The results found that Verizon overall has better coverage, but AT&T download rates are 62 percent faster than Verizon, and AT&T upload rates are 38 percent faster than Verizon.

For phone calls, Verizon passed every test, whereas AT&T failed two. The AT&T iPhone also occasionally switched to the slower EDGE in some locations while trying to place a call, but the Verizon iPhone was able to pull a 3G signal to place a call at every location â€” even in â€œdead spotsâ€ where it seems impossible to get an AT&T signal.

Seems like the antennagate issues are gone. If I was an AT&T user switching to Verizon to use the iPhone 4, I’d be extremely happy right now. But at the same time, I’d like to use both voice and data at the same time. Decisions, decisions.